-79.8% is the change from 683 to 138
Calculation steps:
[( 138 - 683 ) ÷ 683] x 100 = -79.8%
Formula
Percentage change = [(138 - 683) / 683] x 100
Subtract the new number by the original number
138 - 683 = -545
-545 ÷ 683 = -0.7979502196193266
-0.7979502196193266 x 100 = -79.8%